I'm new to programming and having problem with using getCheckedItemPositions() for check boxes and getting edit values from edit text in custom list view. Can anyone help me with an example to create custom list view which has above functionality. Thanks.
*this is custom listview xml code
<CheckBox android:id="#+id/checkBox" android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_alignParentRight="true"
android:text="CheckBox"
android:onClick="clickHandler"
></CheckBox>
<TextView android:layout_height="wrap_content"
android:layout_width="fill_parent" android:text="TextView"
android:id="#+id/textView1"
android:layout_alignParentLeft="true"
android:layout_centerHorizontal="true" android:layout_marginBottom="14dp"
android:layout_toLeftOf="#+id/checkBox">
*This is code for set up listview
lv1 = (ListView)dialog.findViewById(R.id.l1);
adapter2 = new SimpleCursorAdapter(
this,
R.layout.custom,
cursor2,
new String[] {"ItemName"},
new int[] {R.id.textView1});
lv1.setItemsCanFocus(false);
lv1.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
lv1.setAdapter(adapter2);
*this what I tried to do when checked
public void onClick(View v) {
int len = lv1.getCount();
SparseBooleanArray checked = lv1.getCheckedItemPositions();
for (int i = 0 ; i < len; i++)
if (checked.get(i)) {
String item = mArrayList.get(i);
mItems.add(mArrayList.get(i));
System.out.println(item);
/* do whatever you want with the checked item */
}
But this is not working. And also I want to use edit text in this manner for getting values.when I checked and click the button app terminate.
The following code will solve your problem.
public class SimpleCursorAdapter extends ArrayAdapter {
private Context mcontext;
private View rowview;
LayoutInflater inflater;
public static ArrayList<Boolean > itemchecked=new ArrayList<Boolean>();
public SimpleCursorAdapter(Context context,ArrayList<String> mylist)
{
super(context,your layout id);
mcontext=context;
//this is the important step
for (int i = 0; i < this.getCount(); i++)
{
itemchecked.add(i,false); // initializes all items value with false
}
}
public View getView(final int position, View convertView, ViewGroup parent) {
rowview=convertView;
if(convertView==null)
{
rowview = inflater.inflate(R.yourlayout, parent, false);
}
TextView textView_heading = (TextView) rowview.findViewById(R.id.textView1);
CheckBox checkbox_detail=(CheckBox) rowview.findViewById(R.id.checkBox1);
checkbox_detail.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
CheckBox cb = (CheckBox) v.findViewById(R.id.checkBox1);
if (cb.isChecked()) {
itemchecked.set(position, true);
// do some operations here
} else if (!cb.isChecked()) {
itemchecked.set(position, false);
// do some operations here
}
}
});
checkbox_detail.setChecked(itemchecked.get(position));
textView_heading.setText(userheading_list.get(position));
return rowview;
}
}
//now the custom list part finish
Now, to get all the information from list and also watch which checkbox is checked:
for(int i=0;i<yourlistadapterobject.getCount();i++)
{
View content_view=msg_adapter.getView(i,null , user_detail_list);
System.out.println("the list count"+user_detail_list.getCount());
if(MyContactAdapter.itemchecked.get(i))
{
System.out.println("is checked true");
TextView tv_heading= (TextView) content_view.findViewById(R.id.textView1);
String text=tv_heading.getText();
}
}
By doing this, you can get all the information against checkbox which is checked.
Related
For my Android project, I have a listview which has a checkbox for every item. The data is loaded from an SQLite database by using a CursorAdapter class. However, whenever I scroll, the checkbox positions will get moved and get carried down to the next part of the listview. How can I fix this problem?
GIF of my CheckBox Problem
Here's my Cursor Adapter Class:
public class VocabCursorAdapter extends CursorAdapter {
private static final int DIFFICULT = 0;
private static final int FAMILIAR = 1;
private static final int EASY = 2;
private static final int PERFECT = 3;
public VocabCursorAdapter(Context context, Cursor c, int flags) {
super(context, c, 0);
}
#Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
return LayoutInflater.from(context).inflate(R.layout.item_vocab, parent, false);
}
#Override
public void bindView(View view, Context context, Cursor cursor) {
// Find fields to populate in inflated template
TextView tvVocabName = (TextView) view.findViewById(R.id.vocabName);
TextView tvVocabDefinition = (TextView) view.findViewById(R.id.vocabDefinition);
ImageView tvVocabLevel = (ImageView) view.findViewById(R.id.vocabLevel);
// Extract properties from cursor
String vocab = cursor.getString(cursor.getColumnIndexOrThrow(VocabDbContract.COLUMN_NAME_VOCAB));
String definition = cursor.getString(cursor.getColumnIndexOrThrow(VocabDbContract.COLUMN_NAME_DEFINITION));
int level = cursor.getInt(cursor.getColumnIndexOrThrow(VocabDbContract.COLUMN_NAME_LEVEL));
// Populate fields with extracted properties
tvVocabName.setText(vocab);
tvVocabDefinition.setText(definition);
if (level == DIFFICULT) {
tvVocabLevel.setImageResource(R.drawable.level_bars_difficult);
tvVocabLevel.setTag(DIFFICULT);
}
else if (level == FAMILIAR) {
tvVocabLevel.setImageResource(R.drawable.level_bars_familiar);
tvVocabLevel.setTag(FAMILIAR);
}
else if (level == EASY) {
tvVocabLevel.setImageResource(R.drawable.level_bars_easy);
tvVocabLevel.setTag(EASY);
}
else if (level == PERFECT) {
tvVocabLevel.setImageResource(R.drawable.level_bars_perfect);
tvVocabLevel.setTag(PERFECT);
}
}
And here's my list item xml, item_vocab.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:longClickable="true">
<ImageView
android:layout_width="36sp"
android:layout_height="36sp"
android:id="#+id/vocabLevel"
android:layout_gravity="right"
android:src="#drawable/level_bars"
android:scaleType="fitXY"
android:contentDescription="#string/vocab_level"
android:layout_centerVertical="true"
android:layout_toLeftOf="#+id/editCheckbox"
android:layout_toStartOf="#+id/editCheckbox"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Large Text"
android:id="#+id/vocabName"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_toLeftOf="#+id/vocabLevel"
android:layout_toStartOf="#+id/vocabLevel"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Small Text"
android:id="#+id/vocabDefinition"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_toLeftOf="#+id/vocabLevel"
android:layout_toStartOf="#+id/vocabLevel"
android:layout_below="#id/vocabName"/>
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/editCheckbox"
android:layout_centerVertical="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"/>
</RelativeLayout>
And here's my xml which contains a listview
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".controller.MyVocab"
android:paddingLeft="5dp">
<ListView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/mVocabList"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/empty_text_view"
android:id="#android:id/empty"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"/>
</RelativeLayout>
I have looked at a lot of different solutions on StackOverflow, but I wasn't able to successfully do it in my own app. For an example, this post has a similar problem, but its solution used getView and I had trouble understanding how to implement it with newView and bindView instead.
And some other solutions might be examples where a cursoradapter is not involved. Any help is much appreciated, thanks a lot!
Edit #1: After incorporating Phan's changes, the checkbox states get resets to false rather than keeping its states when I scroll the listview (See ).
Reason : ListView re-uses the views.
Solution :
class VocabCursorAdapter extends CursorAdapter {
List<Integer> selectedItemsPositions;//to store all selected items position
public VocabCursorAdapter(Context context, Cursor c,int flags) {
super(context, c,0);
selectedItemsPositions = new ArrayList<>();
}
#Override
public View newView(Context context, Cursor cursor, ViewGroup viewGroup) {
View view = LayoutInflater.from(context).inflate(R.layout.item_vocab, viewGroup, false);
CheckBox box = (CheckBox) view.findViewById(R.id.editCheckbox);
box.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
int position = (int) compoundButton.getTag();
if (b) {
//check whether its already selected or not
if (!selectedItemsPositions.contains(position))
selectedItemsPositions.add(position);
} else {
//remove position if unchecked checked item
selectedItemsPositions.remove((Object) position);
}
}
});
return view;
}
#Override
public void bindView(View view, Context context, Cursor cursor) {
//your other stuff
CheckBox box = (CheckBox) view.findViewById(R.id.editCheckbox);
box.setTag(cursor.getPosition());
if (selectedItemsPositions.contains(cursor.getPosition()))
box.setChecked(true);
else
box.setChecked(false);
}
}
Try this
public class VocabCursorAdapter extends CursorAdapter {
private ArrayList<Boolean> itemChecked = new ArrayList<Boolean>(); // array list for store state of each checkbox
public VocabCursorAdapter(Context context, Cursor c, int flags) {
for (int i = 0; i < c.getCount(); i++) { // c.getCount() return total number of your Cursor
itemChecked.add(i, false); // initializes all items value with false
}
}
#Override
public void bindView(View view, Context context, Cursor cursor) {
...
final int position = cursor.getPosition(); // get position by cursor
CheckBox checkBox = (CheckBox) view.findViewById(R.id.editCheckbox);
checkBox.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if (itemChecked.get(position) == true) { // if current checkbox is checked, when you click -> change it to false
itemChecked.set(position, false);
} else {
itemChecked.set(position, true);
}
}
});
checkBox.setChecked(itemChecked.get(position)); // set the checkbox state base on arraylist object state
Log.i("In VocabCursorAdapter","position: "+position+" - checkbox state: "+itemChecked.get(position));
}
}
public class ObservationselectattributeFragment extends Fragment {
DatabaseHandler mDBHandler;
ListView mListView;
SimpleCursorAdapter mSCA;
Cursor mCsr;
ArrayList<String> attributeItems = new ArrayList<>();
public ObservationselectattributeFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Inflate the layout for this fragment
View view1=inflater.inflate(R.layout.fragment_observationselectattribute, container, false);
//Bundle bundle2 = getArguments();
Bundle bundle1 = getArguments();
final int firsttext= bundle1.getInt("TotalCount");
final String selectedtreatment= bundle1.getString("SelectedTreatment");
Toast.makeText(getActivity(),"value \n"+firsttext+"\n"+"treatment \n"+selectedtreatment, Toast.LENGTH_SHORT).show();
// Toast.makeText(getActivity(),"SelectedTreatment \n"+selectedtreatment, Toast.LENGTH_SHORT).show();
mListView = (ListView)view1.findViewById(R.id.lv001);
mListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
Button addattribute = (Button)view1.findViewById(R.id.addattribute);
addattribute.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String items1="";
Integer tcount1=0;
for(String item1:attributeItems){
items1+="-"+item1+"\n";
tcount1++;
}
Toast.makeText(getActivity(),"you have selected \n"+items1,Toast.LENGTH_LONG).show();
Toast.makeText(getActivity(),"you have selected \n"+tcount1,Toast.LENGTH_LONG).show();
/*FragmentTransaction fr= getFragmentManager().beginTransaction();
fr.replace(R.id.main_container, new ShowObservationDataRecordingFragment()).addToBackStack("ObservationselectattributeFragment");
fr.commit();*/
Bundle bundle = new Bundle();
bundle.putInt("TotalCount2",firsttext);
bundle.putInt("TotalCount1", tcount1);
bundle.putString("SelectedTreatment", selectedtreatment);
Fragment showobservationdatarecordingfragment = new ShowObservationDataRecordingFragment();
showobservationdatarecordingfragment.setArguments(bundle);
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.main_container, showobservationdatarecordingfragment).addToBackStack("ObservationselectattributeFragment").commit();
}
});
mDBHandler = new DatabaseHandler(this.getActivity());
mCsr = mDBHandler.getAllRecords();
// Prepare a list of the columns to get the data from, for the ListViewt
String[] columns_to_get_data_from = new String[]{
DatabaseHandler.KEY_IDS,
DatabaseHandler.KEY_NAMES,
DatabaseHandler.KEY_FNAME,
DatabaseHandler.KEY_MONAME,
DatabaseHandler.KEY_SNAME
};
// Prepare a list of the Views into which to place the data
int[] itemviews_to_place_data_in = new int[]{
R.id.euserid,
R.id.eusername,
R.id.efname,
R.id.emoname,
R.id.esname
};
// get and instance of SimpleCursorAdapter
mSCA = new SimpleCursorAdapter(getActivity(),
R.layout.listviewitem_record,
mCsr,
columns_to_get_data_from,
itemviews_to_place_data_in,
0);
// Save the ListView state (= includes scroll position) as a Parceble
Parcelable state = mListView.onSaveInstanceState();
// get and instance of SimpleCursorAdapter the listviewitem_record layout
mListView.setAdapter(mSCA);
// Restore previous state (including selected item index and scroll position)
mListView.onRestoreInstanceState(state);
mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String attributeItem1 = ((TextView)view.findViewById(R.id.euserid)).getText().toString();
String attributeItem2 = ((TextView)view.findViewById(R.id.eusername)).getText().toString();
String attributeItem3 = ((TextView)view.findViewById(R.id.efname)).getText().toString();
String attributeItem4 = ((TextView)view.findViewById(R.id.emoname)).getText().toString();
String attributeItem5 = ((TextView)view.findViewById(R.id.esname)).getText().toString();
String attributeItem = attributeItem1 + attributeItem2 + attributeItem3 + attributeItem4 + attributeItem5;
// CheckedTextView box = (CheckedTextView) view.findViewById(R.id.record_checkbox);
// box.setChecked(true);
CheckedTextView checkedTextView = (CheckedTextView) view.findViewById(R.id.record_checkbox);
if(checkedTextView.isChecked()) {
checkedTextView.setChecked(false);
} else {
checkedTextView.setChecked(true);
}
if(attributeItems.contains(attributeItem)){
attributeItems.remove(attributeItem);//uncheck item
}
else
{
attributeItems.add(attributeItem);
}
Toast.makeText(getActivity(), "Item1 = " + attributeItem1 +"\n"+ "Item2 ="+attributeItem2 +"\n"+"Item3 ="+attributeItem3+"\n"+"Item4 ="+attributeItem4+"\n"+"Item5 ="+attributeItem5, Toast.LENGTH_SHORT).show();
}
});
((HomeActivity) getActivity())
.setActionBarTitle("Select Attribute");
return view1;
}
}
I am making a question that could be like a duplicated question, but i have tried everything and nothing worked for me. I have created a listview witch every item has two views, one textview and one checkbox. Its like a multiselect listview. Every item has a level on its own: easy, normal, hard. When a level is chosen from a dropdown: All, Easy, Normal, Hard.. the list changes, just like a filter system.
But when i write listView.getChildAt(i).setVisibility(View.GONE); the content of the row is removed but the space occupied is not released.
Any help?
This is my code:
public class CreatePresentation extends Activity
{
DatabaseHelper db = new DatabaseHelper(this);
MyCustomAdapter dataAdapter = null;
List<Slider> list;
ListView listView;
String Text;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.create_presentation);
displayListView();
checkButtonClick();
}
private void displayListView()
{
list = new ArrayList<Slider>();
ArrayList<Slider> oldList = db.getAllSliders();
for (Slider anOldList : oldList) {
String s = anOldList.toString();
int in = anOldList.getId();
String lev = anOldList.getLevel();
Slider slider = new Slider(in, s, lev, false);
list.add(slider);
}
dataAdapter = new MyCustomAdapter(this, R.layout.list_check_box, list);
listView = (ListView) findViewById(R.id.listView);
listView.setAdapter(dataAdapter);
}
private class MyCustomAdapter extends ArrayAdapter<Slider> {
private ArrayList<Slider> list;
public MyCustomAdapter(Context context, int textViewResourceId, List<Slider> list) {
super(context, textViewResourceId, list);
this.list = new ArrayList<Slider>();
this.list.addAll(list);
}
private class ViewHolder {
TextView text;
CheckBox checkbox;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
final Slider slider = list.get(position);
if (convertView == null) {
LayoutInflater vi = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = vi.inflate(R.layout.list_check_box, null);
holder = new ViewHolder();
holder.text = (TextView) convertView.findViewById(R.id.sliderTitle);
holder.checkbox = (CheckBox) convertView.findViewById(R.id.checkBox);
convertView.setTag(holder);
Spinner dropdown = (Spinner)findViewById(R.id.spinner);
String[] items = new String[]{"Tutto", "Facile", "Medio", "Difficile"};
ArrayAdapter<String> adapter = new ArrayAdapter<String (CreatePresentation.this, android.R.layout.simple_spinner_item, items);
dropdown.setAdapter(adapter);
Text = dropdown.getSelectedItem().toString();
holder.checkbox.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
CheckBox cb = (CheckBox) v;
Slider slider = (Slider) cb.getTag();
slider.setSelected(cb.isChecked());
}
});
try {
if (list.get(position).getLevel().equals("Facile"))
convertView.setBackgroundColor(Color.parseColor("#477C3D"));
else if (list.get(position).getLevel().equals("Medio"))
convertView.setBackgroundColor(Color.parseColor("#936019"));
else if (list.get(position).getLevel().equals("Difficile"))
convertView.setBackgroundColor(Color.parseColor("#A02307"));
} catch (Throwable e) {
e.printStackTrace();
}
dropdown.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, final int position, long id) {
Text = parentView.getItemAtPosition(position).toString();
try {
if (Text.equals("All")){
Runnable run = new Runnable(){
public void run(){
for (int i = 0; i < list.size(); i++) {
listView.getChildAt(i).setVisibility(View.VISIBLE);
}
}
};
runOnUiThread(run);
}
if (Text.equals("Easy")){
Runnable run = new Runnable(){
public void run(){
for (int i = 0; i < list.size(); i++) {
if (list.get(i).getLevel().equals("Easy")) {
listView.getChildAt(i).setVisibility(View.VISIBLE);
}
else {
listView.getChildAt(i).setVisibility(View.GONE);
}
}
}
};
runOnUiThread(run);
}
if (Text.equals("Normal")){
Runnable run = new Runnable(){
public void run(){
for (int i = 0; i < list.size(); i++) {
if (list.get(i).getLevel().equals("Normal"))
listView.getChildAt(i).setVisibility(View.VISIBLE);
else {
listView.getChildAt(i).setVisibility(View.GONE);
}
dataAdapter.notifyDataSetChanged();
}
}
};
runOnUiThread(run);
}
if (Text.equals("Hard")){
Runnable run = new Runnable(){
public void run(){
for (int i = 0; i < list.size(); i++) {
if (list.get(i).getLevel().equals("Hard"))
listView.getChildAt(i).setVisibility(View.VISIBLE);
else
listView.getChildAt(i).setVisibility(View.GONE);
}
}
};
runOnUiThread(run);
}
} catch (Throwable e) {
e.printStackTrace();
}
}
#Override
public void onNothingSelected(AdapterView<?> parentView) {
}
});
holder.checkbox.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
CheckBox cb = (CheckBox) v;
Slider slider = (Slider) cb.getTag();
slider.setSelected(cb.isChecked());
}
});
}
else
{
holder = (ViewHolder) convertView.getTag();
}
holder.text.setText(slider.getQuestion());
holder.checkbox.setChecked(slider.isSelected());
holder.checkbox.setTag(slider);
return convertView;
}
}
the best way to do this is to remove the item from the list and call dataAdapter.notifyDataSetChanged()
As you want to remove your view but keep your item inside your List I suggest you to use a different method. When the user choose a value that will cause the item to be hide just set that value to your item and then call
dataAdapter.notifyDataSetChanged();
Doing this you have to modify the logic inside your getView(), I mean if you find an item that is eligible to get hide instead of return convertView inside the getView() method of your customAdapter just return an empty view, like this you item won't be shown but it will still be in your list;)
You can use a parent Layout for Yuor item to resolve the issue:
For example:
<LinearLayout ...>
<!-- Here Your item content starts -->
<LinearLayout android:id="#+id/content">
...
</LinearLayout>
<!-- Here Your content ends -->
</LinearLayout>
Java code:
listView.getChildAt(i).getChildAt(0).setVisibility(View.GONE);
just like a filter system. Why "like", why not make it actually filterable? There are two options. Easier one is overriding toString of your slider. Other one is creating custom filter, which wouldn't use object's toString method. However, I don't remember how exactly to do second one, only that it's possible.
Slider:
String toString(){
return this.type;
}
When spinner selection changes:
adapter.getFilter().filter(selectedDifficulty);
This will automatically display items you want to see.
You shouldnt change visibility of views generated by adapter - they change every time when you scroll listview. Instead you should change the behaviour of underlying adapter.
You can try this layout instead of the ListView since there's only 4 filters:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<include
android:id="#+id/filter_1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
layout="#layout/<your_listview_adapter>"
android:visibility="visible" />
<include
android:id="#+id/filter_2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
layout="#layout/<your_listview_adapter>"
android:visibility="visible" />
<include
android:id="#+id/filter_3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
layout="#layout/<your_listview_adapter>"
android:visibility="visible" />
<include
android:id="#+id/filter_4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
layout="#layout/<your_listview_adapter>"
android:visibility="visible" />
</LinearLayout>
When you want to hide one of the filters you can just do something like:
findViewById(R.id.filter_4).setVisibility(View.GONE);
EDIT:
For instance, if you want to add information to a TextView inside the first include you just have to call the View like this:
View filter1 = findViewById(R.id.filter_1);
TextView tv1 = (TextView) filter1.findViewById(R.id.<the_id_of_the_textview);
tv1.setText("StackOverflow filter");
To prevent add another layout in outside of your layout. You just hide the item's all child views, not item itself.
For example:
if(i == 1){ // assume we need hide the first item.
//item itself
ViewGroup parent = ((ViewGroup) holder.convertView);
for (int j = 0; j < parent.getChildCount(); j++) {
parent.getChildAt(j).setVisibility(View.GONE);
}
}
And i have test this code, works fine for me.
I was surprised that I couldn't find an existing answer on Stack that I could use for this, so here I am.
I have a ListFragment with a list attached to a SimpleCursorAdapter comprised of the rows defined by the following row.xml file:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="6dip" >
<CheckBox
android:id="#+id/story_check_box"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:focusable="false"
android:focusableInTouchMode="false" />
<TextView
android:id="#+id/story"
android:layout_width="wrap_content"
android:layout_height="24sp"
android:lines="1"
android:scrollHorizontally="true"
android:singleLine="true"
android:layout_alignBaseline="#+id/story_check_box"
android:layout_alignBottom="#+id/story_check_box"
android:layout_toRightOf="#+id/story_check_box" />
</RelativeLayout>
I connect the list with the adapter with the following code in my ListFragment:
adapter = new SimpleCursorAdapter(getActivity(), R.layout.row, null, new String[] { CProvider.Stories.TITLE }, new int[] { R.id.story }, 0);
setListAdapter(adapter);
I then try to use a CheckBox in my fragment to toggle all the list checkboxes as follows:
CheckBox selectAll = (CheckBox) rootView.findViewById(R.id.select_check_box);
selectAll.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
final ListView listView = getListView();
for(int i=0; i < getListAdapter().getCount(); i++){
View view = getViewByPosition(i, listView);
CheckBox cb = (CheckBox)view.findViewById(R.id.story_check_box);
if (isChecked) {
cb.setChecked(true);
}
else {
cb.setChecked(false);
}
}
}
});
I got getViewByPositionfrom here: Get ListView children that are not in view, and that almost works, but a few of the checkboxes don't get checked (and there is a pattern to it, but I can't seem to figure it out). It also seems a bit kludgier than I would think is necessary.
I want the checkboxes on the left, so I don't want to use checkedtextviews. Maybe I need to extend CursorAdapter and override getView?
Thanks in advance.
Maybe I'm not correctly understanding your question but what I understood was that you wanted to check and uncheck all the checkboxes thanks to one "Select All checkbox".
Then, what I would do is to put the state of the "select all checkbox" as a variable of the class (as a boolean) which is overwritten by your selectAll.setOnCheckedChangeListener and say to the adapter "Hey, my state changed!" every time the checkbox changed its state.
Something like this:
class Dummy{
boolean isAllSelected = false;
Checkbox selectAll = (find or create your CheckBox)
selectAll.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) isAllSelected = true;
else isAllSelected = false;
listView.getAdapter().notifyDataSetChanged();
}
}
And then, you just have to override the getView() of this adapter (like you suggested) adding a "if (isAllSlected)" condition.
To me, it sounds the easiest to do but it's maybe not that good to call the notifyDataSetChanged() method every time the user clicks on a checkbox (it's not that efficient for so minor changes). Anyway, hope it helps (the code I wrote is maybe not with the correct syntax: I wrote it directly on the website form)!
Below is what I wound up doing. In addition to taking care of the "select all/ unselect all" functionality, it handles checking/unchecking a checkbox when the text of a list item is selected/unselected, and vice versa. I was concerned about getView being called frequently, but setItemChecked causes getView to be called no matter what, so there's a limit to how much calls to getView can be avoided. As ataulm mentioned in a comment, maybe a composite view would a solution with less fuss.
In onCreateView:
selectAllCheckBox = (CheckBox) rootView.findViewById(R.id.select_all_check_box);
selectAllCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
final ListView listView = getListView();
for(int i=0; i < getListAdapter().getCount(); i++){
listView.setItemChecked(i, isChecked);
}
}
});
I also created a custom SimpleCursorAdapter with the following code, which also uses a simple ViewHolder class. In getView I check which items in the list are selected and check the checkboxes corresponding to those items. There's also code that sets a list item as selected or not if its corresponding checkbox has been clicked (i.e., checked or unchecked).
class AvailableCursorAdapter extends SimpleCursorAdapter {
AvailableCursorAdapter(Context context, int layout, Cursor c, String[] from, int[] to, int flags) {
super(context, layout, c, from, to, flags);
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View row = super.getView(position, convertView, parent);
ViewHolder holder = (ViewHolder)row.getTag();
if (holder == null) {
holder = new ViewHolder(row);
row.setTag(holder);
}
holder.storyCheckBox.setChecked(false);
holder.story.setTextColor(Color.LTGRAY);
long [] checkedIds = getListView().getCheckedItemIds();
if (checkedIds != null) {
for (int i = 0; i < checkedIds.length; i++) {
if (checkedIds[i] == getListAdapter().getItemId(position)) {
holder.storyCheckBox.setChecked(true);
holder.story.setTextColor(Color.WHITE);
break;
}
}
}
final boolean isChecked = holder.storyCheckBox.isChecked();
holder.storyCheckBox.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
getListView().setItemChecked(position, !isChecked);
}
});
return(row);
}
}
.
class ViewHolder {
CheckBox storyCheckBox;
TextView story = null;
ViewHolder(final View row) {
storyCheckBox = (CheckBox) row.findViewById(R.id.story_check_box);
story = (TextView) row.findViewById(R.id.story);
}
}
Finally, the following code causes getView to be called when a single ListItem is clicked, so that its corresponding checkbox gets selected or unselected, as appropriate:
#Override
public void onListItemClick(ListView l, View v, int position, long id) {
ViewHolder holder = (ViewHolder) v.getTag();
holder.storyCheckBox.setChecked(false);
holder.story.setTextColor(Color.LTGRAY);
long [] checkedIds = l.getCheckedItemIds();
if (checkedIds != null) {
for (int i = 0; i < checkedIds.length; i++) {
if (checkedIds[i] == getListAdapter().getItemId(position)) {
holder.storyCheckBox.setChecked(true);
holder.story.setTextColor(Color.WHITE);
break;
}
}
}
}
I am trying to create a Custom dialog via DialogFragment.
i want to have a Title and a Checkbox.
I am doing this by using a Custom Title as follows
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingTop="5dp" >
<TextView
android:id="#+id/textView1"
style="?android:attr/textAppearanceLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:paddingLeft="15dp"
android:text="Categories"
android:textColor="#ffffff"
android:textSize="22sp" />
<TextView
android:id="#+id/all"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="All"
android:textColor="#ffffff" />
<CheckBox
android:id="#+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" android:paddingRight="10dp"/>
</LinearLayout>
Now i want to reference this this Check box and add a listener to the Checkbox.
I want to achieve something like this
What i have tried ?
public class CategoriesDialogFragment extends SherlockDialogFragment {
ListView dialog_ListView;
static CheckBox chk_all;
static SelectViewHolder viewHolder;
private static ArrayAdapter<mItems> listAdapter;
static ArrayList<String> checked = new ArrayList<String>();
protected static CharSequence[] _categories = { "Amusement Park",
"Bird Sanctuary", "Wild Life", "River", "Hill Station", "Temple",
"Rafting", "Fishing", "Hiking", "Museums" };
protected static boolean[] _selections = new boolean[_categories.length];
PlacesListAdapter adapter;
ListView listView;
Button dialog_ok;
static int TAG = 0;
static mItems categories;
static mItems orig;
public static CategoriesDialogFragment newInstance(int title) {
CategoriesDialogFragment frag = new CategoriesDialogFragment();
Bundle args = new Bundle();
args.putInt("title", title);
frag.setArguments(args);
return frag;
}
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final Dialog dialog = new Dialog(MainActivity.context);
//dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setTitle("Categories");
dialog.setContentView(R.layout.dialog);
dialog_ok = (Button) dialog.findViewById(R.id.button_category_ok);
dialog_ok.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
dialog.dismiss();
}
});
dialog_ListView = (ListView) dialog.findViewById(R.id.listViewDialog);
dialog_ListView
.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View item,
int position, long id) {
categories = listAdapter.getItem(position);
orig = listAdapter.getItem(position);
categories.toggleChecked();
viewHolder = (SelectViewHolder) item.getTag();
viewHolder.getCheckBox().setChecked(
categories.isChecked());
if (!viewHolder.getCheckBox().isChecked()) {
TAG = 1;
chk_all.setChecked(false);
}
TAG = 0;
/*
* if (viewHolder.getCheckBox().isChecked()) {
*
* TAG = 0; }
*/
for (int i = 0; i < _categories.length; i++) {
categories = listAdapter.getItem(i);
if (!categories.isChecked()) {
break;
}
if (i == _categories.length - 1) {
TAG = 1;
chk_all.setChecked(true);
TAG = 0;
}
}
}
});
chk_all = (CheckBox) dialog.findViewById(R.id.checkBoxAll);
chk_all.setOnCheckedChangeListener(new OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (TAG != 1) {
if (isChecked) {
for (int i = 0; i < listAdapter.getCount(); i++) {
categories = listAdapter.getItem(i);
categories.setChecked(true);
}
listAdapter.notifyDataSetChanged();
} else {
for (int i = 0; i < listAdapter.getCount(); i++) {
categories = listAdapter.getItem(i);
categories.setChecked(false);
}
listAdapter.notifyDataSetChanged();
}
}
if (TAG == 1) {
TAG = 0;
}
}
});
// itemss = (mItems[]) onRetainNonConfigurationInstance();
ArrayList<mItems> CategoryList = new ArrayList<mItems>();
CategoryList.add(new mItems("Amusement Park"));
CategoryList.add(new mItems("Bird Sanctuary"));
CategoryList.add(new mItems("Wild Life"));
CategoryList.add(new mItems("River"));
CategoryList.add(new mItems("Hill Station"));
CategoryList.add(new mItems("Temple"));
CategoryList.add(new mItems("Rafting"));
CategoryList.add(new mItems("Fishing"));
CategoryList.add(new mItems("Hiking"));
CategoryList.add(new mItems("Museums"));
// Set our custom array adapter as the ListView's adapter.
listAdapter = new SelectArralAdapter(MainActivity.context, CategoryList);
dialog_ListView.setAdapter(listAdapter);
return dialog;
}
private static class SelectArralAdapter extends ArrayAdapter<mItems> {
private LayoutInflater inflater;
public SelectArralAdapter(Context context, List<mItems> planetList) {
super(context, R.layout.dialog_row, R.id.rowTextView, planetList);
// Cache the LayoutInflate to avoid asking for a new one each
// time.
inflater = LayoutInflater.from(context);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// Planet to display
mItems planet = (mItems) this.getItem(position);
// The child views in each row.
CheckBox checkBox;
TextView textView;
// Create a new row view
if (convertView == null) {
convertView = inflater.inflate(R.layout.dialog_row, null);
// Find the child views.
textView = (TextView) convertView
.findViewById(R.id.rowTextView);
checkBox = (CheckBox) convertView.findViewById(R.id.CheckBox01);
// Optimization: Tag the row with it's child views, so we
// don't
// have to
// call findViewById() later when we reuse the row.
convertView.setTag(new SelectViewHolder(textView, checkBox));
// If CheckBox is toggled, update the planet it is tagged
// with.
checkBox.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
System.out.println("uffff");
CheckBox cb = (CheckBox) v;
mItems row_view = (mItems) cb.getTag();
row_view.setChecked(cb.isChecked());
TAG = 1;
chk_all.setChecked(false);
TAG = 0;
for (int i = 0; i < _categories.length; i++) {
row_view = listAdapter.getItem(i);
if (!row_view.isChecked()) {
break;
}
if (i == _categories.length - 1) {
TAG = 1;
chk_all.setChecked(true);
TAG = 0;
}
}
}
});
}
// Reuse existing row view
else {
// Because we use a ViewHolder, we avoid having to call
// findViewById().
SelectViewHolder viewHolder = (SelectViewHolder) convertView
.getTag();
checkBox = viewHolder.getCheckBox();
textView = viewHolder.getTextView();
}
// Tag the CheckBox with the Planet it is displaying, so that we
// can
// access the planet in onClick() when the CheckBox is toggled.
checkBox.setTag(planet);
// Display planet data
checkBox.setChecked(planet.isChecked());
textView.setText(planet.getName());
return convertView;
}
}
}
I am not sure how we can include a setCustomTitle layout for the Custom Dialog
Now i want to reference this this Check box and add a listener to the
Checkbox.
I'm assuming that you show the dialog using the DialogFragment's onCreateDialog method, so in the onCreateDialog method you would do:
// inflate the layout title
View customTitle = inflater.inflate(R.layout.custom_title, null);
// find the CheckBox and set the listener
CheckBox ckb = (CheckBox) customTitle.findViewById(R.id.checkBox1);
ckb.setOnCheckedChangeListener(new ...);
// set the title view on the dialog etc
I've been having a lot of trouble with this problem. I have a listview that contains:
ImageView / contactName / TextView / CheckBox
The contactName in the listview is populated by reading the contacts on the phone from a SimpleCursorAdapter. All for elements show when the app runs, but the problem I'm having is connecting the checkboxes to their corresponding item in the list.
Through some research, I found that I must use a getView() to link the checkboxes with the items in the list, but through practice, I can't seem to get it to work right. Furthermore, none of the examples I've tried really explained how to apply getView(). The most full example I've been working from is from here:
http://androidcocktail.blogspot.com/2012/04/adding-checkboxes-to-custom-listview-in.html
The twist is that this reads and populates my listview with my contacts:
private void populateContactList() {
// Build adapter with contact entries
Cursor cursor = getContacts();
String[] fields = new String[] {
ContactsContract.Data.DISPLAY_NAME
};
SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.contact_entry, cursor,
fields, new int[] {R.id.contactEntryText});
lv.setAdapter(adapter);
} // END POPULATECONTACTLIST
private Cursor getContacts()
{
// Run query
Uri uri = ContactsContract.Contacts.CONTENT_URI;
String[] projection = new String[] {
ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME
};
String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '" +
(chkboxAllVisible ? "0" : "1") + "'";
String[] selectionArgs = null;
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";
return managedQuery(uri, projection, selection, selectionArgs, sortOrder);
} // END GETCONTACTS
How do I link each checkbox to the a corresponding contact items in my listview?
Ok i have created a test project for you try to understand code if any problem you are having then ask I will try to help you...
HERE IS MY ONCREATE FUNCTION OF ACTIVITY.
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ArrayList<String> elements = new ArrayList<String>();
for (int i = 0; i < 10; i++) {
elements.add("elements " + i);
}
CheckBox master_cb = new CheckBox(getApplicationContext());
master_cb.setText("Check All");
//HERE IS THE LIST VIEW WHICH I HAVE CREATED IN MY XML FILE.
ListView lv = (ListView) findViewById(R.id.listView1);
//HERE I AM CREATING CUSTOM ADAPTER OBJECT.
my_custom_adapter adapter = new my_custom_adapter(this, android.R.layout.simple_list_item_1, elements);
lv.addHeaderView(master_cb);
lv.setAdapter(adapter);
master_cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
Intent my_intent = new Intent("master_check_change");
my_intent.putExtra("check_value", isChecked);
sendBroadcast(my_intent);
}
});
}
HERE IS MY CUSTOM ADAPTER.
public class my_custom_adapter extends ArrayAdapter<String> {
private Context context = null;
ArrayList<String> elements = null;
private ArrayList<Boolean> itemChecked = null;
public my_custom_adapter(Context context, int type, ArrayList<String> elements)
{
super(context, type, elements);
this.elements = elements;
this.context = context;
itemChecked = new ArrayList<Boolean>();
BroadcastReceiver receiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("master_check_change")) {
boolean check_value = intent.getBooleanExtra("check_value", false);
set_checked(check_value);
notifyDataSetChanged();
}
}
};
context.registerReceiver(receiver, new IntentFilter("master_check_change"));
set_checked(false);
}
// AS EVERY TIME LISTVIEW INFLATE YOUR VIEWS WHEN YOU MOVE THEM SO YOU NEED TO SAVE ALL OF YOUR CHECKBOX STATES IN SOME ARRAYLIST OTHERWISE IT WILL SET ANY DEFAULT VALUE.
private void set_checked(boolean is_checked)
{
for (int i=0; i < elements.size(); i++) {
itemChecked.add(i, is_checked);
}
}
//THIS IS SIMPLY A CLASS VIEW WILL HOLD DIFFERENT VIEWS OF YOUR ROW.
static class ViewHolder
{
public TextView tv;
public CheckBox cb;
public ImageView iv;
}
#Override
public View getView (final int position, View convertView, ViewGroup parent)
{
View rowView = convertView;
ViewHolder holder = null;
if (rowView == null) {
LayoutInflater inflater = (LayoutInflater)context.getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
// HERE I AM INFLATING LISTVIEW LAYOUT.
rowView = inflater.inflate(R.layout.inflated_layout, null, false);
holder = new ViewHolder();
holder.cb = (CheckBox) rowView.findViewById(R.id.checkBox1);
holder.tv = (TextView) rowView.findViewById(R.id.textView1);
holder.iv = (ImageView) rowView.findViewById(R.id.imageView1);
rowView.setTag(holder);
} else {
holder = (ViewHolder) rowView.getTag();
}
if (holder != null) {
holder.tv.setText(elements.get(position));
holder.cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
itemChecked.set(position, isChecked);
}
});
if(position < itemChecked.size()) {
holder.cb.setChecked(itemChecked.get(position));
}
}
return rowView;
}
}
main.xml file is this:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" >
</ListView>
</RelativeLayout>
inflated_layout code is :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<CheckBox
android:id="#+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_marginRight="17dp" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toLeftOf="#+id/checkBox1"
android:layout_toRightOf="#+id/imageView1"
android:singleLine="true"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:src="#drawable/ic_launcher" />
</RelativeLayout>
if you want to use string array instead of arraylist then replace
String[] elements = new String[10];
for (int i = 0; i < 10; i++) {
elements[i] = "elements " + i;
}
// IN YOUR CUSTOM ADAPTER CUNSTRUCTOR
public my_custom_adapter(Context context, int type, String[] elements)
and some more changes accordingly
SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.contact_entry, cursor,
fields, new int[] {R.id.contactEntryText});
See in this particular code you are only mapping text source (in field ) with actual textView (R.id.contactEntryText)... So similarly you need to add... another field and corresponding view to map for Checkbox.
or better make a CustomAdapter, you can find tutorials on that and override getView method,you get maximum flexibility.You can do whatever you want to do.
This might help: http://windrealm.org/tutorials/android/listview-with-checkboxes-without-listactivity.php
don,t go with custom list view you can use default listview having the facility of check boxes but only one with each list item read listview on android developer site for list view property. listview having checkbox you just need to set multiselection list view
Edit 1:
follow the link : click here
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setListAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_multiple_choice, GENRES));
final ListView listView = getListView();
listView.setItemsCanFocus(false);
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
}